Railway chair and rail.



No. 695,297. Patented Mar. Il, |992.

H. A. FORBES.

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UNITED reims Fn'rnnrr Enron.

` HARRY ASI-IBURN FORBES, OF FINCI-ILEY, LONDON, ENGLAND.

RAILWAY CHAIR AND RAM...

SPECIFICATION forming part of Letters Patent No. 695,297, dated March 11, 1902.

Application filed December 9, 1901. Serial No. 851277. (No model.)

To all whom it may concern.-

Be it known that I, HARRY AsHBURN FORBES, a subject of the King of Great Britain, residing at Devonshire Villa,Woodhouse Lane, Finchley, London, England, have invented a new and usefulImprovelnent in Rail- Way Chairs and Rails, of which the following is a specication.

My invention relates to an improvement in the permanent way of railroads, and is designed to obviate the drawback of the creep# ing of the rails in the chairs or other like fastenings connecting them to the sleepers. This creeping is especially objectionable at curves and on inclines and at points and crossings and cannot be prevented with the construction of rails and chairs hitherto in use.

My invention is illustrated in the accompanying drawings, in Which-1 Figure 1 represents an elevation of a railway-chair constructed for theordinary double-headed rail according to my invention. Fig. 2 represents the same chair in plan view. Fig. 3 shows a section of the chairon the line A B, illustrating the .left-hand portion thereof. Fig. 4 shows in section, and Fig. 5 in elevation, a portion of a rail constructed according to my invention.

In the figures, 1l indicates the base of the chair, 12 the smooth, and 13 the corrugated, jaw thereof.

14 indicates the head of the foot of the double-headed rail, and l5 the vertical corrugation of its web.

The corrugation of the rail is shown in section in Fig. 4, it being an essential feature of my invention that the thickness of the web is in no Wise materially diminished or increased at any point, a groove or elevation on one side being always opposed to a corresponding ridge or depression on the other.

My corrugations must have rounded apices, so as to avoid cutting or straining of the metal and in order that the wedges driven between the rail and the jaw 12 may be :firmly gripped without the fiber of the wood being too much damaged by friction against cutting-surfaces. The corrugation of the rail-Web may extend throughout its length, or it may be only at those parts which will be inclosed by the jaws of the chair.

The operation of the device is as follows: The rail is placed in' the chair in the usual manner and is wedged in the same by any convenient method-such, forinstance, as by means of the ordinary wooden wedge commonly used for the purpose. The wedge of course is driven between the web of the rail and the jaw 12 of the chair, thus forcing the corrugations 15 of one side of the rail into the corresponding groovings of the jaw 13 of the chair. In this position the rail is firmly locked to the chair and cannot creep in the direction of its longitudinal axis. In the case of rails of other section than the doubleheaded one-sucln for instance, as the flatfooted rail-it would be possible to corru gate the foot and the corresponding portion 16 of thechair or holder; but I prefer to corrugate the web.

What I claim is- 1. A railroad-chair having a vertically-corrugated jaw adapted to interlock with the rail, and a rail having its web vertically corrugated on both sides Without diminution of its thickness at any point, said corrugations having rounded apices substantially as set forth.

2. In combination, the chair Il, the smooth jaw 12, the vertically-corrugated jaw 13, and a `rail having the vertical corrugations 15 adapted to interlock with the corrugated jaw 13.

In testimony whereof I have signed my name to thisspeciiication in the presence of two subscribing witnesses.

IIARRY ASHBURN FORBES.

Witnesses:

HERBERT SEFTON JONES, HORACE D. WooLLEY. 

